RTP VS HOUSE EDGE
1. RTP vs House Edge: The One-Line Answer
RTP (Return to Player) and house edge describe the exact same game math from two viewpoints. RTP is the slice paid back to players; the house edge is the slice the casino keeps. Every dollar wagered goes to one or the other, so the two percentages must add up to 100%. That's why a 96% RTP slot has a 4% house edge, and a 1% house edge dice game has a 99% RTP. There is nothing more to it — the rest of this guide just shows why and how to use it.
2. What RTP (Return to Player) Means
RTP is the percentage of all money wagered on a game that is paid back to players over the long run. It's the player's-eye view of the math. If a slot has an RTP of 96%, then across millions of spins it returns, on average, $96 for every $100 wagered. The missing $4 is the casino's share.
Two things matter about that definition. First, it's measured against total amount wagered, not your deposit — the same money is bet many times, so RTP describes turnover, not a single play. Second, it's a long-run theoretical average, computed over an enormous number of bets. In any short session your actual return swings wildly above or below the RTP because of variance. RTP is the destination over millions of plays, not a guarantee for your hundred spins.
3. What House Edge Means
House edge is the percentage of every wager the casino keeps on average. It's the same number as RTP, flipped to the casino's-eye view. A 4% house edge means that, over the long run, the casino expects to keep 4 cents of every dollar wagered — and that small, permanent cut, multiplied by huge volume, is the entire casino business model (we break the economics down in how do crypto casinos make money?).
The house edge is built into the payout odds, not bolted on afterward. A fair coin flip should pay 2× your stake; a casino "coin flip" pays slightly less, and that shortfall is the edge. On provably fair games the edge is literally visible in the formula — for example a Limbo or Crash multiplier formula includes a × 0.96 term that is the 4% edge made explicit. You can confirm that on any round in our provably fair verifier.
4. The Formula & How to Convert Either Way
Because RTP and house edge always total 100%, converting between them is a single subtraction:
House Edge = 100% − RTPRTP = 100% − House EdgeA few quick conversions to make it concrete:
| If RTP is… | House edge is… | You keep / lose per $100 wagered |
|---|---|---|
| 99% | 1% | Lose about $1 |
| 97% | 3% | Lose about $3 |
| 96% | 4% | Lose about $4 |
| 94.74% | 5.26% | Lose about $5.26 (American roulette) |
| 90% | 10% | Lose about $10 |
The "per $100 wagered" column is the figure that actually matters to your wallet — and again, it's per amount wagered, which after re-betting is usually far more than you deposited. Our house edge calculator does this conversion for any number you type and shows the expected cost in dollars.
5. Worked Examples by Game
Example 1 — A 96% RTP slot
96%Example 2 — A 1% house edge dice game
1%Example 3 — American roulette
5.26%In all three cases the move is identical: one number is given, you subtract from 100, and you have the other. The lower the house edge (and so the higher the RTP), the less the game costs you per dollar wagered over the long run. To see how the edge varies by game type, see our provably fair guide, where the dice and Limbo examples show the edge inside the math.
6. Why It Matters — and What It Doesn't Tell You
Knowing the RTP/house-edge relationship is genuinely useful: it lets you compare games on a like-for-like basis and pick the ones that cost you least. Between a 96% slot and a 99% dice game, the dice game keeps a quarter as much of your money per dollar wagered. That's a real, math-backed reason to prefer it.
But be honest about the limits of the number:
- The long-run cost of a game per dollar wagered
- How two games compare on value
- That higher RTP = lower edge = cheaper to play
- On provably fair games, the exact edge applied
- Whether you'll win this session (that's variance)
- That any standard game is profitable — all have an edge
- How volatile the game is (RTP ≠ volatility)
- Your actual short-run return, which swings wildly
The single biggest misconception is that a high RTP means you'll win. It doesn't. A 98% RTP game still has a 2% edge against you — it's cheaper than a 90% game, but it's still negative expected value. RTP also says nothing about volatility: two 96% slots can feel completely different, one paying small wins often and the other paying rarely but big. Whether a long enough run of a negative-edge game can ever make you rich is its own question — answered honestly in can you get rich on a crypto casino?
Bottom Line
RTP and house edge are two views of one number and always add to 100%, so RTP = 100% − house edge. RTP is what players get back over the long run; house edge is what the casino keeps. A 96% RTP slot has a 4% edge; a 1% edge dice game has a 99% RTP. Higher RTP means a lower edge and a cheaper game per dollar wagered — but it never means the odds favour you, and it says nothing about volatility or your short-run results. Convert any figure both ways with our house edge calculator, prefer lower-edge games, and treat gambling as paid entertainment.